Speak about Channel

Hi Again

a few day ago i buy 4 nand flash JS29F64G08CAMD2 and i have 2 pcb

Alcor au6987hl

Smi 3257en

Take A look that


Smi 3255ab-3257aa-3257en-3257enlt _Phison 2250-2260-2261-2267 ,Ite 1171-1170-alcor au6989an

No Support Dual Channel Mode

Because Used Internal Crystal

So i Install in Two Side But ChipGenius_v4_00_0028_stable Detect 1 Channal


The Mean is Interleave

Read Speed Just =20Mb
Write Speed Just =10Mb

Why?


8 комментариев

JS29F64G08CAMD2 have 2CE ok? JS29F32G08AAMD2*2

ok 4 Flash On 1 Channel so Read and write Speed Must be slow
if i Install 2 nand Flash Have 1 ce

Read Speed is Normal But Write Speed is *2
But in Large Flash Size For Example 32G or 64G Controller Muse Have 2 or 4 or 8 Channel
Now in Alcor Au6987hl


Alcor Old Famly Have 2 Channel I Can Use Duall Channel or Use Interleave ((Change Some «R» to Change Interleved or Dual Channel "


Now in Here READ SPEED IS MAXIMUM USB2 =33MB
AND WRITE SPEED IS 17MB
SMI 3257EN IS NEW IC

SUPPORT 4X,3X,2X,1X FLASH

BUT HAVE 1 CHANNEL

READ SPEED IN NORMAL MLC «I SAY NORMAL NOT TOGGEL » 20MB
AND WRITE SPEED UP TO 15 MB IN INTERLEAVED NORMAL FLASH

BUT NO NEED TO CYSTAL

I READ IN PHISON SITE CRYSTAL PRICE IS 40% PCB (FLASH BOARD)

BUT IF WE NEED REAL GOOD SPEED WE MUST USED 2~4~8 CHANNEL CONTROLLER AND USE CRYSTAL

PS2238(THE KING ) JUST SUPPORT MLC,SLC 3XNM FLASH BUT HAVE 8 CHANNEL AND CAN MAXIMUM WRITE AND READ SPEED FROM USB 2

ALSO AU6987HL IS LOW COST ABOUT PHISON 2238 BUT IS BETTER (IN PRICE )
CRYSTAL LIKE A Heart MAKE OFF-ON (WE SEE BLINKING LED )IN USB 2 12000 OFF ON IN 1 SECOND TO SEND OR GET DATA FROM
UNVERSIAL SERIAL BUS LIKE A Telegraph

FLASH MEMORY Technology GO TO Demise

CONTROLLER COMPANY AND FLASH MAKER COMPANY JUST THINK CHEAP PRICE

SOME PEOPLE JUST USE Bench32 AND PLACED IN SITE WRITE SPPED IS XX
BUT IN REAL JUSE USED BUFFER NO REAL SPEED
EXAMPLE
2261+ED3=USED 4096 BYTE BUFFER NEVER 1 CHIP (TLC )CANT WRITE 15MB REAL IS 4MB
MAY BE IN FRIST 10 SECOND SPEED IS GOOD BUT IS NO REAL

ALSO I HATE SANDISK ,SANDISK IS SO CHEAP BUT REAL UN TRUSTED MEMORY

DATA FOR PEPLE IS SO IMPORTAND BUT COMPANY Betrayal TO PEOPLE
FAMLY PICTURE OR VIDEO PLACED IN «SDTNPNAHEM»?
JUST 2 WEEK I SAY JUST 2 WEEK AFTER ALL DATA IS UNREADABLE

SO AFTER ALL I Designing FOR MY SELF I DONT TRUST ANY COMANY

AU6987HL+2 INTEL MLC4K FOR ME «16$» BUT READ IS 33 AND WRITE IS 17 MB
AND NOW I CAN COPY MY IMPORTANT DATA TO THIS.

THANK YOU .TEAM
i know you Mother f…
Some Friends Emailed for me if I Used IM 25nm L74A for example «MT29F64G08CBAAA MLC L74A» is better

so IM 64G 25nm Is 1CE ok? Some Version of JetFlash Used 6989an+L74A But If Used 1CE Speed is low

But IM l63a 64G is 2Ce So 2*2 Write Speed Just need More Flash On Pcb

Never And Ever 1CE Flash Speed Up to 15Mb

For Example
Patriot Rage Also Used IM 25nm L74a But Use 2 pcs

So 1 Mlc w Speed=7
If Used 2Ce *2 Channel May be Write Speed up to 20 mb

But Pcb Is So important

A good Designer NOT CARE A NEW FLASH

Just CARE Result

A new Controller also Just Have 1 Channel

So If We Make Flash White 2250-2260-2267

We never have 30mb read Speed
Also Phison Type in site 2250 can write mlc is 20 mb

Ok I test Sumsung K9hcg in phison 2250 and i get 18mb Write speed
but If I Used 2 k9hcg ,2250 havent another Channel For Work it so
Interleaved him and w speed just 10mb
— Also New Toggele nand Used Flash Area to Buffer and Cash Speed

If We Used 50% Flash Size Flash Speed Is lower than Before

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